Inclosed lighting unit



NOV. 3, 1931. c, DQANE 1,830,263

INCLOSED LIGHTING UNIT Filed Dec. 3, 1925 glVENTOR [erg .2007:

BY 2 ATTORNEY Patented Nov. 3, 1931 UNITED STATES PATENT oFncE 7 LEROYC. DOANE, OI MERIDEN, CONNECTICUT, ASSIGNOB TO THE KILLER OI MERIDEN,CONNECTICUT, A CORPORATION 01 CONNECTICUT nwcnosnn Home um Applicationfled December a, 1925. Serial in. 72,890.

The resent invention relates to an inclosed hghting, unit, and is moreparticularly directed toward a unit which may function as asemi-indirect lighting unit, or as a direct lighting unit. a

The present invention contem lates an inclosed lighting unit, having a gass to and a glass bottom, and which is provide with w an interiorlyarranged reflector adapted to reflect most of the light upwardly ordownwardly, as desired, and at the same time permit a small amount oflight to reach the opposite side of the unit. In this manner one isenabled to provide a soft illumination in a difl'using bowl under thereflector, when the reflector is directin the most of the light from thelower half of the lamp toward the ceiling, thereby providing an indirectlightin fixture which is illuminated on its under si c. It is alsopossible to illuminate the ceiling sufficiently to avoid shadows, whenthe reflector returns most of the light from the upper half of the lampdownward to increase the intensity of light in the bowl.

Another object of the invention is to so arrange the reflector andinclosing unit that the reflector is concealed and invisible fromoutside the unit even when it is illuminated.

A further object of the invention is to provide a reversible. reflectorthat the unit may be converted at will.

The accompanying drawings show, for

urpcses of illustration, one of the many emodiments in which the presentinvention may take form, it being understood that the drawings areillustrative of the invention,

which may be embodied in various forms.

In these drawings:

Figure 1 is a side elevational view with parts in section showing thereflector below thelamp bulb in full lines and showing it inverted indot and dash lines' Figure 2 is an enlarged sectional view showing adetail of the construction; and

Figure 3 is an elevational view of a. removable disc placed in thecenter of the reflector.

The lighting unit is provided with a suitable supporting stem, or thelike, 10, which carries any desired form of socket cover and wardly andinwardly,

wardly so that the outside diameter is comparatively large. Its outeredge 15 is car-f ried inside of a split channel member 16, somewhatdeeper than the thickness of the glass, as illustrated more clearly inFigure 2. This channel'is split, as shown at 17 in Figure 1, so that itmay be readily placed around the outer edge of the cover plate 14.

It is not necessary to attach it to the lass.

A lower diffusing bowl 18 of suita 1e out late as here shown, extendsdownwardly an outline and design is, as here shown, mounted in a metalband 19. The lower end of this band has a channel, as shown at 20 tocooperate with he upper lip 21 of the 'flusin bowl 18. This metal partis reenforced at its up-;

per end by a ring 22, as indicated in Figure 2. A flat ring 23 isremovably fastened to the top of the band 19 by screw 24. This I ringprojects inwardly, as indicated at 25,

so as to rest on top of the upper side of the channel 16 and supportsthe band 19 and diffusing bowl.

The reflecting member above referred to is here shown in the form ofdished sheet metal stamping 26, the central art of which is concaveddownwardly as in 'cated. This stamping is provided with a peripheralflange 27, which is adapted to rest on the upper side of the channel 21of the band 19, so as to carry the reflector in groper position. Thereflector is provided wit a downwardly reflecting surface 28 whichextends from the flange 27 upas indicated in the drawings. The stampingis then bent downwardly and is provided with a number of windows 29,separated by narrow ribs 30. These ribs serve to support the centraldished part of the reflector. These windows and the outer reflectingsurface are so placed that some of the light coming from the lamp willpass through the windows and reach the reflecting surface 28 and bereflected downwardly into the difl'using bowl, as indicated by the rayof light marked ell-a. In this inc manner a small quantity of light willbe permitted to reach the diffusing bowl which will glow with a dulllight. The light which reaches the central part of the reflector 26 willbe reflected upwardly, as indicated by the ray 6-4), and will pass outthrough the transparent plate 14 so as to illuminate the ceiling. Ofcourse, the light falling directly on the cover plate 14 will passthrough unobstructed as indicated at c. It will thus be seen that, whenthe reflector is in this position, most of the light will be sentupwardly and that the unit will function as a semi-indirect lightingunit. At the same time a small quantit of h ht will be permitted toenter the di using owl and become scattered so that the bowl will not bedark from underneath.

The reflector 26 has a centrally arranged hole 31, somewhat larger thanthe neck of the lamp, and a removable disc 32 is held in place to closethe hole by a plurality of prongs 33 resting on the reflector 26.

To convert the lamp from one in which most of the illumination isdirected upwardly to one in which most of the light is directeddownwardly, one removes the central disc 32 from the reflecting member,and places this member in a dot-and-dash line osition of Figure 1. Theflange 27 of the re ector is I place next to the outer ed e 15 of theglass cover plate 14, and the spit channel 16 is placed around thesemembers so as to hold them together. A small amount of light willthenpass through the windows 29 so as to reach the reflecting surface 28,as. before. This light will be directed upwardly, as indicated by therays a and c and dot-anddash lines. Most of the light, however, will bereflected downwardly by the central part of the reflector, as shown bythe ray marked dd so as to illuminate the diffusing bowl 18. The unitwill then act as a direct lighting unit, the ceiling being lighted toavoid shadows.

The opaque metal band 19 which surrounds the central part of the unitwill effectively hide and conceal the reflector sothat it will not bevisible when looking at the li hted unit from the side. At all times there ector will be invisible to the eye from underneath the lamp becauseof the diffusing nature of the glass. No shadows will appear on thisglass when the unit is illuminated.

It is obvious that the invention may be embodied in many formsandconstructions within the scope of the claims and I wish it to beunderstood that the particular form shown and described is but one ofthe many forms. Various modifications and changes being possible, I donot otherwise in any way limit myself with respect thereto.

I claim: 7

1. An inclosed lighting unit having a lower light-diffusing bowl, anupper glass cover,

teaches an inclosed electric lamp, and a reversible metal reflectorcarried between the bowl and inclosed electric lamp, and a reversiblemetal reflector carried between the bowl and cover, said reflector whenin one position having its reflecting surface below the lamp adapted toreflect light upwardly through the cover, and when in the other positionhaving its reflecting surface above the lamp and adapted to reflectlight downwardly to illuminate the bowl, said reflector having windowspermitting a portion of the light to pass through the reflector andhaving a second reflecting surface to reflect the light passing throughsaid windows and redirect it in the other direction.

' 3. The combination with an electric lamp and a glass inclosing unithaving a diffusing lower part, of a reflector carried inside the glassunit and capable of being positioned to riphery of the glass plate, alight-diffusing glass bowl supported from the skirt, the bowl, cover.plate, and skirt enclosing the lamp, and a reflector carried between theglass parts, said reflector being shaped to reflect the most of thelight toward one of the glass parts and to permit a small amount. oflight to reach the other glass part.

5. An inclosed lighting unit comprising, a downwardly opening lamp-socket, a lam in the lamp socket, a support for the lamp soc et,

a socket cover, a translucent glass cover plate supported from thesocket cover, a sheet metal skirt supported from the periphery of theglass plate, a light-diffusing glass bowl supported from the ,skirt, thebowl, cover late, and skirt inclosing the lamp, and a re ector ca rriedbetween the glass parts, said reflector being capable of being invertedand being so shaped that, in either position, most of the lightis'reflected in one direction and a small amount of light is permittedto reach the glass part on the opposite side of the unit.

fleeting band outside the windows to receive light transmittin throughthe windows and v scattez it inside t e difiusing bowl.

Signed at Meriden in the county of New 5 Haven and State of donnecticut,this 28 day of Nov.,- 1925.

LEROY DOANE.

